Oxygen isotope analysis is used when studying the relationship between ________ and climate change
A) ice cores
B) trees
C) dendrochronology
D) pollen
E) volcanoes
Answer: A
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Why does oil seep to the surface from its source rock?
a. Capillary actions b. Convection c. Oil is less dense than surrounding sediments d. Porosity is higher at the surface
During the first 20 years of recycling (from 1960 to 1980), the average annual increase in recycling was approximately ________
A) 80 million tons/year B) 1 million tons/year C) 20 million tons/year D) 10 million tons/year E) 8.0 million tons/year
What is the difference between stream discharge and stream velocity? What are the units used to measure discharge and velocity? Why does stream discharge change along the length of the stream? Why does stream velocity change along the length of a stream?
What will be an ideal response?
Judge the following sentence: Even though water vapor has the greatest effect as a greenhouse gas, it is not normally discussed as one BECAUSE water vapor is completely natural and we have no control over it
a. ?The assertion and reason are both correct. b. ?The assertion is correct and the reason is incorrect. c. ?The assertion is incorrect and the reason is correct. d. ?Both the assertion and the reason are incorrect.